Evadare: Fairground

Fairground - You find yourself alone wandering through a forest when you come across an abandoned fairground. You're curious at first, curiosity soon turns to fear, you try to leave but you're trapped. You search for a way to escape but an invisible force won't let you. As you start to panic and search for some way out you hear a weak, terrified voice. 'HELP ME' it calls.
You have one hour to figure out how to escape the fairground, if not I fear you may be trapped forever.